247540760954551 has 2 divisors, whose sum is σ = 247540760954552. Its totient is φ = 247540760954550.

The previous prime is 247540760954491. The next prime is 247540760954561. The reversal of 247540760954551 is 155459067045742.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247540760954551 is a prime.

It is a super-2 number, since 2×247540760954551² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247540760954561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123770380477275 + 123770380477276.

It is an arithmetic number, because the mean of its divisors is an integer number (123770380477276).

Almost surely, 2^{247540760954551} is an apocalyptic number.

247540760954551 is a deficient number, since it is larger than the sum of its proper divisors (1).

247540760954551 is an equidigital number, since it uses as much as digits as its factorization.

247540760954551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680000, while the sum is 64.

The spelling of 247540760954551 in words is "two hundred forty-seven trillion, five hundred forty billion, seven hundred sixty million, nine hundred fifty-four thousand, five hundred fifty-one".